Nepean Bay Weather Forecast

    • 11
    • 23

    Partly cloudy

    • 11
    • 23

    Cloudy

    • 10
    • 21

    Cloudy

    • 11
    • 24

    Cloud clearing

    • 13
    • 32

    Sunny

    • 13
    • 35

    Sunny

    • 16
    • 35

    Partly cloudy

Today 23 Dec Kangaroo Island

Cloudy. Winds southwesterly 15 to 25 km/h. Daytime maximum temperatures between 19 and 23.

Investigator Strait Coastal Waters

Wind
Southwesterly 15 to 20 knots.
Seas
Around 1 metre, increasing to 1 to 1.5 metres inshore by early evening.
1st Swell
West to southwesterly around 1 metre, increasing to 1 to 1.5 metres around midday.
Weather
Partly cloudy.
Weather Situation
A ridge of high pressure persists across South Australia this week as the high centre moves to the south of the Bight on Thursday, continuing eastwards on Friday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Nepean Bay Temperature Statistics View More

December Temperature

Kingscote Airport (7km)

  • Lowest 7 December, 2025

    3.8 °C

  • Average December

    17.8 °C

  • Highest 18 December, 2025

    41 °C

Climate (2020–Present)

Kingscote Airport (7km)

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  • Average Low 2020–2025

    9.2 °C

  • Average 2020–2025

    14.7 °C

  • Average High 2020–2025

    21.1 °C
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